Island



* 5 eeeeeeeeeeee 1. J. BARTLETT 8v G. B; WIGGIN.

, SEWING MAGHINB.

Patented Mer'. 26, 1889:

(No Model.)

l Ma

(No Model.) n l 5 sheets-sheet 2. J. BARTLETT 8v G. B. WIGGIN.

SEWING MACHINE.

No. 11.00.037.A Patented Mar. Z6, 1889.

iliilllillllllllllllllllllll l n] Y @fw/iff (No Mdel.) 5 Sheets-Sheet 3.

J. BARTLBTT au G. B. WIGGIN.

SEWING MACHINE.

No. 400,037. Patented Mar. 26, 1889.

(No Model.)

5 SheetsfSheet 4. J. BARTLETT 8:0. B. WIGGIN.

SEWING MACHINE.

Patented Mar. 26,' 1889.

(No Model.) 5 Sheets-Sheet 5. J. BAlLlLlIT 8p G. B. WIGGIN.

SEWING MACHINE.

- 100.400,03?. Patented Mer. 26, 1880.

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NITED STATES PATENT trice.

JONATHAN BAR'ILETT, OF EPPING, AND GEORGE l. lVlGlrlN, OF SOUTH NElV MARKET, NEI/V HAMPSHIRE, ASSIGNORS OF ONE-HALF TO JOHN lV. HOARD, OF PROVIDENCE, RHODE ISLAND.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 400,037, dated March 26, 1889. Original application filed July 28, 1887, Serial No. 245,561. Divided and this application filed May 3, 1888. Serial No. 272,746'.

To all whom t may concern:

Beit known that we, JONATHAN BAR'TLETT, of Epping, and GEORGE B. WIGGIN, of South New Market, in the county of Rockingham and State of New Hampshire, have invented certain new and useful Improvements in Sewing-Machines; and we do hereby declare that the following` is a full, clear, and exact description of the invent-ion, which will en- Io able others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

Our invention relates to sewing-machines generally, but more particularly to the class of waxed-thread machines adapted for sewing shoes or other articles made from leather or other kindred material, but has special reference to the thread-looper and its construction and action, and to parts adjacent thereto.

In the accompanying drawings, Figure l is a front elevation of a machine embodying' our invention. Fig. 2 is an elevation with the covers of the two cam-boxes and their attachments removed. Fig. 3 is a side elevation. Fig. 4 is a vertical section from front to rear. Fig. 5 illustrates two plan views, showing different positions of the curved hook or whirl; Fig. 6, a detail of the horn; Fig. 7,

a view of the under side of the machine.

Figs. 8 and 9 illustrate details of different positions oli' the needle and in relation to a cast-oit; Fig. l0, an elevation of the horn, looper, and part of the needle-bar, showing the course of the thread; Fig. ll, a central section of the looper and its support, and

Fig. l2 a plan view of a concave rack for eni gaging the pinion on the shaft of the looper.

Similar letters represent like parts in all the figures. f

A is the base of the machine, and .l 'l' are the two vertical standards for supporting the mechanism.

C is the driving-shaft, which passes through the standards B B', having' the driving-wheel D at one end and the cani E at the other.

(No model.)

Secured to the driving-shaft C, between the standard l and wheel D, is a gear, F. A small gear or pinion, G, is journaled on the 5o standard B under the gear F, and engages with said gear, while a third gear, H, engages with the gear G, and is secured under said gear upon a shaft, I, which passes through the standards B B. To the opposite end of said shaft from the gear H is a cam, J, for a purpose hereinafter to be described.

Keyed to the shaft C, between the standards B and B', is another cam, K, also for a purpose hereinafter to be described.

L is an oscillating frame or standard, which is pivoted to the top of the standard B and rests against the same. This frame L has a box or casing, il, in which the cam E and other parts of the machine are adapted to work, and N is an opening in the frame L, in which revolves the cam J. The cover O of the casing M is adapted to be screwed or otherwise secured to the same, and it suppoi ts the needle-bar .P and adjacent mechanism. 7o The needle-bar P is adapted to be held and to slide through holes in the brackets A A2, which form a part of the cover O.

C is a longitudinal vertical slot extending' through the cover O, and in which the slide- 7 5 bar D is adapted to slide.

Secured near the lower end of the slide D is a sleeve, a, which extends outward from the slide, and through which the needle-bar passes, and is secured by a thum b-screw, a.

Nea-r the lower end of the slide D', and extending' inwardly from the same, is a block or projection, l), and attached to said slide near its upper end is another block or projection, b. This is verticallyadjustable in said slide by means of a slot, c, inthe same and a thumbscrew passing through said slot and block D. The two blocks l) and l/ enter into the upper and lower space-extensions (l (l of the casing M, and are adapted to be operated upon by 9o the cam E, which revolves in the middle circular part, c, of t-he casing. This cam E is curved on one side, E', and straight on the i other side, E2, so that when the cam revolves in one direction the eurved suriaee will ride over and operate the blocks b 71', while any turning tothe opposite direetion will bring the shoulder which is formed by the straight side D2 in eontaet with the bloels and prevent an)v further turning in tha-t direction. The bloek l1 is :'uljustable, so as to regulate the length of the loop ol' the thread. lVhen it is near to the bleek I1, it. will be operated upon by the eani E tor a longer period tha-n il' it were t'ar away from the hloek 71 and t-he Ynetalle-bar and needle, and consequently the loop would be raised higher and the loop lengthened.

Q is a sleeve, which is adjustably attaehtal to the needle-bar l) between th e upper b racket, A?, and the sleeve a. rlhe needle-bar l) has a longitudinal groove or slot, (7"), in its side, in which the east-ofi bar e rests, and which allows the needle-har and said east-oit' bar to slide longitudinally relatively to eaeh other. 'lhe groove extends down said har to within a short distance ol.' the lower end, and at the point at whieh lsaid groove terminates the rod is eut away i'or a short distanee, so as toilforin a shoulder, e', against whieh a lnojeetitnl ora shoulder near the lower end ol' the east-olli' bar is adaptwl to strike. The needle lp and eastolif e? are attaehed tothe needle-bar and :ast-oil' bar, respeetivelv.

Heeured to the upper end olf theeasi-oit' bar c is a sinall sleeve, e, whieh projet-ts ont bevond the slot (72.

is a small rod whieh is parallel with the needle-bar, and which passes through seid sleeve 1^, the sleeve (12 the braeket A2, and a. tension-bracket, Ai".

71 711 713 are three sleeves adj ustably attached to the rod q, the sleeve 71y being attached to the lower end ot said rod below the sleeve ei", 711 and 712 being attaehed to said rod, one on .(aeh side ot' the sleeve Q, at a sul'iieient disianee to allow a sinall play of the sleeve Q between the sleeves 71 and 7F. A Coil-spring, 71:', eneireles the rod between the sleeve e3 and the sleeve 71', so as to keep the sleeves e and 71 in etnltaei-, and eonsequentl);v to keep the rpd vr/ iirinlv in plaee.

lt l are brackets extending out beyond the l'rontoi the 111ael1i11e,a11d through vertieal holes in theendsoi' these brackets the pressertoot har is adapted to slide. rThe presseri'oot S is attaehed to the presser-foot bar in any appropriatewav. eireles the bar H, and between the braehetli and an adj ustaible sleeve, Si", on said bar. i'uneiion ot" this spring is to press the presserl'oot down upon thehorn upon whieh the goods are plaeed and seen.

livoted to the braehet l is a lever, T, one l i the t'ranie l1.

end oiA whieh has a eoneave recess upon its upper side, whieh is adapted to l'n'ess against the under side ol' a roller, imirualed to the bar S above the braeket R. '.lo the other end oll the level' 'l` is loosely pivoted a vertieal rod, l.

A eoil-sln'ing, C2, en-

The

U is a lever which is pivoted to the standard B on the other side oi' the shaft C from the rod t', and this lever has a hole through whieh the lower end of the rod 7, passes, and which is large enough to allow olf a `free movement of the rod in said hole. The lower end of the rod is serew-threaded, and has a nut below the lever U to keep the rod and lever together and to adjust; them relatively to eaoh other. The lever U passes under the eain lx', and is adapted to be held against the said eanl by the nut on the end of rod 7. A handle, '(1, is attached to the t'ree end ot the lever l to allow the presser-toot to be raised by hand, The opening N in tralne VL is substantially square, and in one side ot' this opening a three-sided reetai1gular-shaped pieee ot' metal, fi, with its lo1'1gitudinal. side parallel with the vertical sides ot' the box. The Cain or eeeentrie .l ada1v1ted to oseillate the it'raine L b v striking against the lnetal pieee and the opposite side ot' the opening alternately. The length of the oscillation of this traine l1 is regulated by a thumb-serew, 7', whieh )'iasses through the s1 andard and .bears against the metal pieee i.

A horizontal projeetion or base, Y, extends from the lower end o'l' the lralne lA iu [front oi.' the saine, and swings with it. lhis traine supports the thread-looper and the looper nieehanisni.

Y a long lever 1 '1ivoted at 7.1 to the bottoni of the base V, and having a segmental rack, 711, at its forward end. Near that end ot' the lever Y which is opposite the rack 711', and extending toward the eenter ot' the lever, is a longitudinal slot, 7a2. A pin, 7, passes 'l OO through said slot and through a slot, i', in

the base A, said slot extending in a line [from the Afront to the haelt ot` the niaehine. A eollar, 7,2, on the pin 7 rests against the under side ol the hase A, and a nut, n1, passing over the upper serew-thread portion, `111', ot' the pin 7 serves to adjust said pin anywhere along the slot 7. A pinion, fn, engages with the raek 7.1:', and another pinion, "n", engages with the pinion `n. loth oi' these p'inions are journaled upon the base Y, and the journal ot' the pinion uf consists oi' a rod, 112, which extends up through the hase 'V and through a tube or sleeve, l11, attached to said hase. ln the npper end of the pivotal rod 'ufl is removably attaehed, in any appropriate inanner, a curved thread Carrier or whirl, r, having an eye, r, near its free end or outer extrenlitv. The adjusting n1eehanis1n 7, 7, 7?, yn1, andv `mf ot' the lever Y serves to regulate the extent ot' the oseillatitni ot the hook or whirl r, and' thus regulate the length ot stiteh. lt'also assists in regulating the distance ol` oseillation ol' \V is the horn or support on whieh the goods are to be plaeed to be sewed, and it is attaehed Vto the base A by serews or otherwise. lt has a sinall horizontal portion, l, on its iop, on whieh the goods and the press- ITO er-foot S are adapted to rest, and a small part of this top of and the front of the horn are cut away at a3, so as to allow room for the needle p and cast-off e2 to descend, and for the loop of the thread. The front wall, w, is also slightly swelled out, as at w', to allow enough space for the oscillation of the hook z'. The side wall, Qc, of the horn has a hole, fr', in which the thread is adapted to pass before it enters the eye of the hook n.4.

The operation of the machine is as follows: The thread y, having been passed through the hole around the vertical part of the hook fu from back to front, and through the hole lU in the end of the hook, is then passed over to the front of the horn XV, resting against the top of the cut-away portion as. The presser-foot Sis then raised by the handle of the lever U, and the material to be sewed is placed between the presser-foot and the horn lV, when theformer is allowed to drop upon the material and hold it in place. The position of the parts will then be as shown in Fig. l. The crank or driving-wheel D is then turned from left to right when facing the front of the machine. The revolution of the shaft C by l its wheel D will revolve the cam E, and this will press against the block b and drive the needle-barP down, so that the hook of the needle p will pass into the horn lV and below the line of the thread. The descent of the needle-bar will also cause the cast-off e2 to descend byreason of t-he sleeve Q pressing' against the sleeve or stop 71.. A little further revolution of the shaft C will cause the cam K to operate the lever U, and thus raise the presser-foot S', so as to allow the materia-l or work to be fed onward. The revolution of the shaft C will also cause the shaft I to revolve through the instrumentality of the gears F G H, and just after the cam K 'has begun to operate the lever U to raise the presser-foot the cam J will come in contact with the rectangular piece i and cause the frame L to oscillate to the left. The needlebar P, being hung on this standard, will also be carried to the left, and the needle, being through the material, will carry the same with it to the end of the stroke. The oscillation of the frame L to the left will cause the vfront end of the lever V and its rack lo to move in the same direction, and will cause the pinion n', its shaft n2, and hook o to move in the direction of the arrows in Fig. 5. The thread at the end of the oscillation to the left will be taut from the vertical part of the hook fu to its eye fv, and be pressed against the hook of the needle p. A further revolution of the shaft will release the cam K from the lever U, so the presser-foot will descend. The cam E will strike against the upper block, b', and thus raise the needle-bar P and needle p, which will carry the loop of the thread with it, as shown in Fig. 8. As the needlebar ascends, it will slide on the cast-off bar e until the sleeve Q strikes against the stop h2, when the cast-olf e2 will close the hook of the needle and retain the thread on the saine, as shown in Fig. 9, and the needle p and cast-off will rise together. A little further revolution of the shaft C will cause cam .l to strike against the right-hand side of the box N, and thus cause the frame L to oscillate t-o the right. The hook or whirl n will then turn in the opposite direction from that in which it turned before and carry the thread back for the next stitch. The cam E will then strike against the block b and force the needle down below the cast-off e2 and so relieve the hoop 5 of the thread. The operation is then repeated. rlhe distance of the oscillation of the frame L determines the length of the feed of the material to be sewed, and alsoof the stitch. The distance is regulated by the lever v and screw-pin Z, before named. By adjusting the pin Zin the slide 7a2 nearer to the fulcrum 7e a longer feed and stitch are obtained.

Our machine can be used for sewing almost any material 5 but it is more particularly adapted for sewing' shoes, either turned or welted, the narrow edge afforded by the hori-v zontal top 1:2 of the horn lV being particularly adapted for welted goods; but we prefer to construct the thread-looper and its operating devices as follows, and as shown in Figs. l0, ll, and l2, in which the rack lo is internal instead of external, and is an arched piece screwed, as shown, on the segment end of lever u', and only one pinion is used, and this engages directly with this rack. This pinion n is formed on the bottom of a rod or post, n2, and in the top of this post is secured by a set-screw a right-angled or crank-shaped tubular thread-carrier, r4, through the bore 1:5 of which a waxed thread may freely pass. The tube or sleeve ai is screwed to the base V. In Fig. l0 is shown the position of these parts relatively to the needle and its thread and the horn at that stage of the sewing after the needle has just caught the thread and is carrying it up through the sole of a shoe. The arrow near the lower part of the iigure shows the direction or route of the thread from the wax-pot, which, as usual, is located below the machine.

This application being' one of the divisions of our original application, led July 28,1887, Serial No. 245,561, we do not herein claim anything claimed either in that application or in .either of the other division applications, No.

272,745 and No. 272,747, iiled May 3, 1888.

l. In combination with the vibratory frame L, andy with a vibratory and reciprocating' needle-bar and needle carried by such frame, the lever V', having an interior segmental rack, 711', the post n2, its pinion n', engaging IOO IIO

with Sayid rack, and the crank-Shaped and described, foi' operating' said carrier, :md Llie lo tubular tluezid-ezu'riei' V4, all Substantially as supporting sleeve 91E", all Substantially as shown and desciibed. Shown and described.

Y The ei'iiiibiilatioii, with the vibrateiy JONATHAN ARTI-ETD 5 frame and 1th the Vlbi'zLi/m'y needle earned CFGROF l TNWTY by Such fra-111e, 0i' tflie Drk-slippoi'ting hom, T J L I l the post. n?, pinion n', crank-Shaped tubulai- Witnesses:

ulu'eml-emrier r, carried by and vibrating GEORGE XV. HILLTARD,

willi the lziid l'lmne, devices, Subsi'izmizinll y as VWILLIAli/f ll. lELKNA'P, 

